Supposedly at launch, the 3Ds Shop Channel was supposed to offer such purchasable games at "Link's Awakening DX" and "Super Mario Land". However, I can't find anywhere that states if the 3Ds Shop Channel games are available now, or if this is one of those 'coming soon' features.

Thank you very much for the answer and provided link. It's official now; I have no reason to buy the 3Ds until June. Man, imagine how awesome it would have been to have the eShop, Zelda, and Starfox launch with this console.